Trump supporters calling different perspective biased is like the pot calling the kettle black. Trump supporters listen to media 99% of which are shoving anti trump narrative down their throats thus giving them a false sense of reality and creating an inherent bias in their brainwashed mind.

You could accuse me of bias if I was the one who was repeating mainstream narrative. So the issue is clear. Blind trump supporters are totally biased of their one sided opinions that they are spoon fed by the media. They do not have the urge nor the intelligence to go beyond the mainstream media to get a better picture of reality. They can choose to stay blind.